Audio output and distortion (CONT)

SB 740-91-01

StepSetting and InstructionsNormal Indication

4(3) Adjust signal input control to produce

(cont.)full-scale (100%) deflection of meter.

(4) Turn function switch to Distortion

(5) Adjust frequency and balance controls

for minimum indication on meter.

(6) Turn meter range switch to lower rangeIt should indicate 8%

and repeat adjustments of above untilor less.

null is obtained. Record distortion as

indicated on TS-723B/U meter.

(p) Disconnect 600 ohm resistor from terminal F

and connect to terminal S of Test Cable No. 1.

(q) Connect TS-723B/U meter leads C and D to Test

Cable No. 1 terminals S and A, respectively.

(r) Perform steps (i), (j), and (k).

(s) Turn the volume control of equipment under It should indicate at

test fully clockwise. Record indication onleast 7.75 V (100 mW).

TS-723B/U meter.

(t) Disconnect TS-723B/U meter leads C and D from

Test Cable No. 1.

(u) Set TS-723B/U meter range switch to 0.3 Vrms.

(v) Connect TS-723B/U meter leads C and D to Test It should be between

Cable No. 1 terminals K and A, respectively.0.16 and 0.31 V.

Record indication on TS-723B/U meter.

B-40